package com.example.online.music.service.impl;

import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.example.online.music.common.R;
import com.example.online.music.mapper.CartListMapper;
import com.example.online.music.model.domain.CartList;
import com.example.online.music.model.request.CartListRequest;
import com.example.online.music.model.response.CartListRespo;
import com.example.online.music.service.CartListService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.dao.DataAccessException;
import org.springframework.stereotype.Service;

import java.util.Date;
import java.util.List;

/**
 * 购物车接口实现
 * @author Jason
 * @date 2023.6.29
 */
@Service
public class CartListServiceImpl extends ServiceImpl<CartListMapper, CartList> implements CartListService {

    @Autowired
    private CartListMapper cartListMapper;

    @Override
    public R addCartList(CartListRequest cartListRequest) {
        CartList cartList = new CartList();
        BeanUtils.copyProperties(cartListRequest, cartList);
        cartList.setCreateTime(new Date());
        int insert = 0;
        try {
            insert  = cartListMapper.insert(cartList);
        }catch (DataAccessException e){
            e.printStackTrace();
            if(e.getMessage().contains("idx_cart_list_usersongid_unique")){
                return R.warning("购物车中已存在相同歌曲");
            }
        }catch (Exception e){
            e.printStackTrace();
            return R.error("加入购物车时发生错误："+e.getMessage());
        }

        if ( insert > 0) {
            return R.success("添加成功");
        } else {
            return R.error("添加失败");
        }
    }

    @Override
    public R deleteCartList(Integer userId, List<Integer> songIds) {
        try {
            cartListMapper.delCartListBySongId(userId,songIds);
        }catch (Exception e){
            e.printStackTrace();
            return R.fatal("删除失败");
        }

        return R.success("删除成功");
    }

    @Override
    public R allCartList(Integer userId) {
        if(userId == null){
            return R.error("参数输入错误");
        }
        CartList cartList = new CartList();
        cartList.setUserId(userId);
        List<CartListRespo> cartListRespos = null;
        try {
            cartListRespos = cartListMapper.selectCartLists(cartList);
        }catch (Exception e){
            e.printStackTrace();
            return R.fatal(e.getMessage());
        }
        return R.success(null, cartListRespos);
    }
}
